osx packaging notes: fix link to new static build script on github
osx packaging notes: fix link to new static build script on github

Teino1978-Corp/Teino1978-Corp-tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,tizzybec/tilemill,nyimbi/tilemill,paulovieira/tilemill-clima,tilemill-project/tilemill,nyimbi/tilemill,tilemill-project/tilemill,mbrukman/tilemill,florianf/tileoven,Teino1978-Corp/Teino1978-Corp-tilemill,tizzybec/tilemill,mbrukman/tilemill,paulovieira/tilemill-clima,nyimbi/tilemill,nyimbi/tilemill,tilemill-project/tilemill,Zhao-Qi/tilemill,paulovieira/tilemill-clima,mbrukman/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,MappingKat/tilemill,fxtentacle/tilemill,tizzybec/tilemill,mbrukman/tilemill,fxtentacle/tilemill,isaacs/tilemill,MappingKat/tilemill,Zhao-Qi/tilemill,MappingKat/tilemill,paulovieira/tilemill-clima,mbrukman/tilemill,Zhao-Qi/tilemill,Zhao-Qi/tilemill,fxtentacle/tilemill,nyimbi/tilemill,isaacs/tilemill,MappingKat/tilemill,florianf/tileoven,Teino1978-Corp/Teino1978-Corp-tilemill,florianf/tileoven,MappingKat/tilemill,tizzybec/tilemill,Zhao-Qi/tilemill,isaacs/tilemill,fxtentacle/tilemill,fxtentacle/tilemill,paulovieira/tilemill-clima,tizzybec/tilemill